Carbureter.



G. L TER WEBB.

GARBURBTER.

APPLICATION FILED JULY 19, 1909.

Patented 00t.1 7,1911.

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rrn .ne raft rib GABJHARDIUS L. TER when, or DETROIT, MICHIGAN, ASSIGNORor, ONE-THIRD ro if svnrmu a. rrmsran AND JOHANNES H. FIGEE, or DETROIT,MICHIGAN.

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To aid whom it may camera Be it known that I, Gannannos L. 'rnu Were, asubject of the Queen of the Neth: erlands, residing at Detroit, in thecounty oi Wayne and State of Michigan, have invented certain new anduseful improvements in Carbureters, of which the following is aspecification, reference being had therein to the accompanying drawings.

My invention relates to carbureters, and consists in certain features ofconstruction, and in the arrangement and combination of parts as will bemore fully hereinafter described.

In the drawings,vl igure l is a-vertical central section through thecarburetor; and Fig. 2 is a'siinilar view, illustrating a znodification.

in the drawings thus briefly described, A represents the casing of thecarburetor, preterably formed in two par.ts,--the reservoir B and topG,-the latter havin a screweservoir B, as at D. The reservoir isprovided with a supply connection E, controlled by a needle valve F,this valve being governed in the usual manner by a float In order toindicate the position occupied by the valve F, I extend the stem thereofoutwardly through the top of the casing C, its engagement with thecasing forming a bearing for guiding the, stein during the raising orlowering of the valve.

H isthe air conduit, formed centrally of l the reservoir B, having arestricted portion I, and terminating beyond said restricted portion inan elongated chamber d, which 1n turn terminates in .a restricteddrieletdii L is a spider,'M isthe' oil. dichafrge noz zle securedcentrally thereotl and .N are conduits establishing comm nicat-ionbetween the rservoir and the discharge nozzle.

0 is a double tapered air valve normally mstin; ;upon seats 1 and Rformedon the air conduit.

S is a spider, fixedly secured to the upper portion of the valve 0, andT is "a needle valve controlling the outlet of the discharge nozzle andhaving a free sliding engagement with the spider S, therebyforming'means for guiding the vertical movement of the valve O. I W V vr r U is a member telescopically engaging the needle valve T, and havinga screw-thread ed engagement at its outer end with the Specification ofLetters Patent.

Application filed July 15, 1909.

Patented Oct. 11? 1911.

Serial No. 508,327..

top Q, as at V. The lower end \V of this ber U in its various positionsof adjustment.-

ihe needle valve '1. is adjustable independently of the member U, and tothis end has an externally screw-tln'eaded portion 0 engagingcorrcsponding internal threads (1 on the member ll.

In the modification shown in Fig. 2, the diaazharge conduit is providedwith an. ad justable needle valve T at its lower end -vvhich controlsthe flow of oil to the discharge conduits The member U is theretore madesolid, and has its lower end slidably engaging the spider S, the upwardmovement of the valve being limited by means of a collar or pin \V uponthe member U. ed engagement with the top of the casing, and is held inits adjusted positions in the same manner as the member U shown in Fig.l. The stem f in this construction, l]()\\'(3\'0l,(l0lfi not extendoutward through the caslngfbut an elongated bearing Z is formed forguiding the movement of the stem. This bearing is so constructed as toform an aunularplmmbor between it and the stem f, and. a plurality ofports in are tornu'd through the sides of the bearing, lherr-ibyestablishing comnuuiiration between .the inlet port and the reservoir.

panded chamber-J into the discharge conduit n; The raising of this valvealso decreases the suction on the discharge nozzle, as the restrictedportion of the valve 0 Will be raised above the outlet of the dischargenozzle, which will leave a larger free area around the-end of saiddischarge nozzle. As

The pin U also has a screw-thread.

soon as the engine resumes its normal speed the valve seats by gravity.As long as the suction in the carbureter is sullicient to raise thevalve from its seat, it floats-between its seats and the stop forlimiting its upward mm'ement. Thus, it will be seen that the engine isautomatically controlled through the carburetor by means of the valve 0,and also that the construction is such that it can be readily applied toengines of widely varying horsepower. It will also be observed that nosprings are emplo ved in the carbureter.

\Vhat I claim as my invention is,

1. In a carlnu'eter, a conduit adapted to connect with an engine, avertically disposed air conduit open at its lower end and communicatingat its ipper end with said first mentioned conduit. said air conduitbeing provided with a valve seat at the top thereof and intermediate theends thereof and directly below said valve seat with an enlarged portiontherein, an oil t'eed nozzle positioned centrally of the enlargedportion of the air conduit, and an open ended double cone valvepositioned in the air conduit and surrounding the oil teed nozzle, theupper end of said valve being normally seated on the valve seat at thetop of the air conduit and the lower end of said double cone valveextending below the point of greatest width of the enlarged portion ot'the air conduit.

2. In a carhuretcr, an air inlet provided with an enlarged portiontherein, an oil feed nozzle positioned centrally of the enlarged portionof the air inlet conduit, a double cone valve positioned in the airconduit and surrounding the oil feed nozzle, the ends of said valvebeing normally seated in the air conduit, adjacent the ends of theenlarged portion thereof, and means forlimiting the movement of thevalve.

3. In a carbu-rcter, an air inlet provided with an enlarged portiontherein, an oil feed nozzle positioned centrally of the enlarged portionof the air inlet conduit, a double cone valve positioned in the airconduit and surrolmding the oil feed nozzle, the ends of said valvebeing normally seated in the air conduit adjacent the ends of theenlarged portion thereof.

4. In a carburetor, an air inlet provided with an enlarged portiontherein, an oil feed nozzle positioned centrally of the enlarged portionof the air inlet conduit a double cone valve positioned in the airconduit and surrounding the oil feed nozzle, the ends of said valvebeing seated in the air conduit adjacent the ends of the enlargedportion thereof, means for limiting the movement of Said valve, andmeans for controlling the flow of fluid from said fluid nozzle.

5. In a carburetor, an air inlet conduit provided with an enlargedportion therein, an oil feed nozzle positioned centrally of the enlargedportion of the air inlet conduit, a double cone valve positioned in theair conduit and surrounding the oil feed nozzle, the ends of said valvebeing normally seated in the air conduit adjacent the ends of theenlarged portion thereof, a needle valve con trolling the outlet fromsaid oil feed nozzle, and means for varying the limit of opening of saidcone valve and for simultaneously adjusting said needle valve whilepermitting independent adjustment of the latter.

6. A carbureter comprising a casing forming a float chamber, a float insaid chamber, means operated by the tloat tor admitting a combustiblefluid to the chamber, an upwardly tapering tubular member in the ot' thefloat chamber extending upward therethrough and open at its ends, a capdetachably secured upon the float chamber and formed with a mixingchamber into which the upper end of the tubular member opens and alsoformed with an outlet pas-age leading from the mixing chamber, a Venturitube in the upper end of the tubular memher, a bridge extending acrossthe tubular i'nember formed with a passage in the float chamber, and anozzle member secured within the bridge with its opposite end extendingupward into the Venturi tube.

7. A carbureter connprising, a cup-shaped casing forming a floatchamber, a float in said chamber, means operated by the tloat foradmitting combustible fluid to the [load chamber, an upwardly taperingtubnlarj member formed integral with the casing at its axis and openingthrough the bottom thereof and extending upward through the casing andopen at its upper end, acap to close the upper end of the Heat chamberand formed with a mixing chamber into which the upper open end of thetubular member opens, said cap being also formed with a laterallyextending discharge passage opening from the mixing chamber, a valve insaid discharge passage, a- Venturi tube movably supported within theupper end of the tubular' member and forming. an auxiliary air passagebetween it and the wall of said member, a flange on the Venturi tube toengage the tubular member and close the auxiliary air passage, and adischarge nozzle in the axis of the tubular member communirating withthe float chamber and extending upward into the Venturi tube.

In testimony whereof I atlix my signature in presence of two witnesses.

GARHARDUS L. m wnnn.

